On the relation of isothermal collape to steady Bondi-accretion

R. S. Herbst, C. Harley, E. Momoniat

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper numerical simulations of collapsing, spherically symmetric, isothermal clouds is revisited. Two models have been considered: initially uniform clouds and initially perturbed Bonnor-Ebert spheres, both of which are embedded in a less dense environment. A finite volume method employing the Marquina flux is used to solve the hyperbolic conservation laws governing the collapse. Combining the numerical results with the analytical results for steady-state Bondi accretion we have shown that the mass of the nascent protostar and the accretion rate onto the protostar can be found directly from the analytical solutions.

Original languageEnglish
Title of host publicationInternational Conference of Numerical Analysis and Applied Mathematics, ICNAAM 2016
EditorsTheodore E. Simos, Theodore E. Simos, Charalambos Tsitouras
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415386
DOIs
Publication statusPublished - 21 Jul 2017
Externally publishedYes
EventInternational Conference of Numerical Analysis and Applied Mathematics 2016, ICNAAM 2016 - Rhodes, Greece
Duration: 19 Sept 201625 Sept 2016

Publication series

NameAIP Conference Proceedings
Volume1863
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference of Numerical Analysis and Applied Mathematics 2016, ICNAAM 2016
Country/TerritoryGreece
CityRhodes
Period19/09/1625/09/16

ASJC Scopus subject areas

  • General Physics and Astronomy

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